Democratic Senator Barbara Boxer’s bid for reelection in California against Republican challenger Carly Fiorina is once again a toss-up.

The latest Rasmussen Reports statewide telephone survey of Likely Voters shows Boxer picking up 49% of the vote, her highest level of support since mid-July. Fiorina earns 45% support. Two percent (2%) prefer some other candidate, and five percent (5%) are undecided. (To see survey question wording, click here.)

Two weeks ago, Boxer held a similar four-point edge - 47% to 43% - over Fiorina, the former CEO of Hewlett-Packard. In surveys since February, Boxer, a member of the Senate since 1993, has earned 42% to 49% of the vote. Fiorina has picked up 38% to 48% support in those same surveys.

The survey of 750 Likely Voters in California was conducted on October 3, 2010 by Rasmussen Reports. The margin of sampling error is +/- 4 percentage points with a 95% level of confidence. Field work for all Rasmussen Reports surveys is conducted by Pulse Opinion Research, LLC. See methodology.

In the first poll conducted since GOP candidate Meg Whitman faced accusations from an ex-housekeeper, former Governor Jerry Brown holds a modest advantage in California’s gubernatorial race.

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